2002 7.2 2003 7.833 2004 10.83 2005 4.688 2006 6.444 2007 8.389 2008 7.667 2009 5.054 2010 5.306 2011 5.967 2012 11.6 2013 7.875 2014 13.46 2015 14.55 2016 16.55 2017 22.19 2018 22.24 # April 2019 2002 7.200 2003 7.967 2004 10.848 2005 4.688 2006 6.556 2007 8.389 2008 7.667 2009 5.242 2010 5.361 2011 5.967 2012 11.667 2013 7.895 2014 13.494 2015 14.575 2016 16.588 2017 22.348 2018 25.171 2019 24.436